Answer:
x = 50
Shortcut answer:
x = 50°
simply because E and F are supplementary.
Long-cut answer:
Sum of interior angle of 4 sided polygon is 360, so add all the 4 angles and equate to 360.
(x+40) + (2x-10) + x + 130 = 360
solve for x will give x=50°
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Answers & Comments
Answer:
x = 50
Shortcut answer:
x = 50°
simply because E and F are supplementary.
Long-cut answer:
Sum of interior angle of 4 sided polygon is 360, so add all the 4 angles and equate to 360.
(x+40) + (2x-10) + x + 130 = 360
solve for x will give x=50°
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